What is the yellow on the head of crayfish

Many people will easily find that when eating crayfish, some yellow substances appear on the head of the crayfish. These yellow substances are granular. Some people say that these are crayfish carried by the mother lobster. They say that these yellow substances are the most nutritious part of the lobster's body and should be eaten more. Some people also believe that these substances are full of parasites and bacteria and cannot be eaten. So what exactly is the yellow color on the crayfish's head?

You should know that shrimp roe contains the crayfish's digestive glands, pancreas, liver and eggs, which are rich in protein and unsaturated fatty acids, so shrimp roe also has nutritional value. At the same time, because the shrimp's digestive organs are in its head, the heavy metal content in the shrimp head is higher than that in the shrimp meat.

We all know that crab roe is very nutritious. It is rich in phospholipids, protein and other nutrients. There is a traditional snack in Jiangsu called crab roe soup dumplings, which is made from crab meat and crab roe. So since crab roe is edible, shrimp roe can be eaten as well, right? Some people say that the roe of crayfish is its poop, but that’s not true.

Then some friends asked, can shrimp heads be eaten? We all know that some organisms living in water, such as fish, have an enrichment effect on heavy metals. So does crayfish, and the effect of crayfish is even higher than that of fish and other organisms. Moreover, the water pollution is serious nowadays. Therefore, for the sake of your health, it is better not to eat the crayfish heads.

If you cook crayfish at home, you must first put the crayfish in tap water and let it survive for at least one day. The purpose of doing this is to allow the crayfish to spit out metabolites within this period of time. In addition, you must also use a brush to clean the crayfish. When cooking, crayfish must be cooked thoroughly at high temperature to kill the parasites.